US8881700B2 - Insert part for camshaft adjuster with center locking - Google Patents

Insert part for camshaft adjuster with center locking Download PDF

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Publication number
US8881700B2
US8881700B2 US13/773,934 US201313773934A US8881700B2 US 8881700 B2 US8881700 B2 US 8881700B2 US 201313773934 A US201313773934 A US 201313773934A US 8881700 B2 US8881700 B2 US 8881700B2
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United States
Prior art keywords
drive
insert part
insert
adjustment device
driven
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Expired - Fee Related
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US13/773,934
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US20130220252A1 (en
Inventor
Holger Brenner
Jurgen Weber
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Schaeffler Technologies AG and Co KG
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Schaeffler Technologies AG and Co KG
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Assigned to Schaeffler Technologies AG & Co. KG reassignment Schaeffler Technologies AG & Co. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BRENNER, Holger, WEBER, JURGEN
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Assigned to SCHAEFFLER TECHNOLOGIES GMBH & CO. KG reassignment SCHAEFFLER TECHNOLOGIES GMBH & CO. KG MERGER AND CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: Schaeffler Technologies AG & Co. KG, SCHAEFFLER VERWALTUNGS 5 GMBH
Assigned to Schaeffler Technologies AG & Co. KG reassignment Schaeffler Technologies AG & Co. KG CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
Assigned to Schaeffler Technologies AG & Co. KG reassignment Schaeffler Technologies AG & Co. KG CORRECTIVE ASSIGNMENT TO CORRECT THE PROPERTY NUMBERS PREVIOUSLY RECORDED ON REEL 037732 FRAME 0347. ASSIGNOR(S) HEREBY CONFIRMS THE APP. NO. 14/553248 SHOULD BE APP. NO. 14/553258. Assignors: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG
Expired - Fee Related legal-status Critical Current
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L31/00—Valve drive, valve adjustment during operation, or other valve control, not provided for in groups F01L15/00 - F01L29/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L31/00—Valve drive, valve adjustment during operation, or other valve control, not provided for in groups F01L15/00 - F01L29/00
    • F01L31/08—Valve drive or valve adjustment, apart from tripping aspects; Positively-driven gear
    • F01L31/18—Valve drive or valve adjustment, apart from tripping aspects; Positively-driven gear specially for rotary or oscillatory valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
    • F01L2001/34453—Locking means between driving and driven members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
    • F01L2001/34453—Locking means between driving and driven members
    • F01L2001/34463—Locking position intermediate between most retarded and most advanced positions
    • F01L2101/00—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2301/00—Using particular materials

Definitions

  • the invention relates to a camshaft adjustment device for an internal combustion engine of a motor vehicle, with a drive part, such as an outer rotor, and a driven part, such as an inner rotor, wherein the driven part is supported so that it can rotate relative to the drive part between a first angular position and a second angular position, wherein a separate insert part originating from the drive part and the driven part is further arranged in a rotational angle limiting connecting link that is constructed in the drive part or the driven part.
  • DE 10 2010 009 393 A1 a device for the variable setting of control times of gas exchange valves of an internal combustion engine is known.
  • An adjustable valve control system is also known from DE 100 64 222 B4 or US 2009/0114502 A1.
  • a further improved locking and rotational angle limiting arrangement of a camshaft adjuster is known from DE 10 2007 019 920 A1.
  • Gas exchange valves of internal combustion engines can be actuated by the cams of a camshaft set in rotation by a crankshaft, wherein the opening and closing times of the gas exchange valves can be selectively defined by the arrangement and shape of the cams.
  • the opening and closing times of the gas exchange valves are influenced during the operation of the internal combustion engine as a function of the current operating state, in particular, the exhaust gas behavior can be positively influenced, the fuel consumption can be reduced, and the efficiency, the maximum torque, and the maximum output of the internal combustion engine can be increased. Because the opening and closing times of the gas exchange valves of the internal combustion engine are specified by a relative rotational position, i.e., phase position between the camshaft and crankshaft, an adjustment of the opening and closing times of the gas exchange valves can be achieved by a relative change of the rotational position between the camshaft and the crankshaft.
  • camshaft adjusters or “camshaft adjustment devices” that transfer the torque from the crankshaft to the camshaft and allow an adjustment of the relative rotational position between the camshaft and the crankshaft, in order to influence the opening and closing times of the gas exchange valves.
  • a conventional camshaft adjuster comprises a drive part coupled via a drive wheel to the crankshaft and a camshaft-fixed driven part, as well as a control drive that is connected between the drive part and the driven part and transfers the torque from the drive part to the driven part and allows a fixing and adjustment of the relative rotational position between the drive part and driven part.
  • the control drive can be operated electrically, hydraulically, or pneumatically. Combinations of these are also conceivable.
  • camshaft adjusters comprise a hollow cylindrical outer stator connected with a driving connection to the crankshaft and an inner rotor that is held concentrically within the outer stator and is locked in rotation with the camshaft and can be rotated relative to the outer stator.
  • hydraulic work chambers are formed between the outer stator and inner rotor, for example, several cavities spaced apart in the peripheral direction are formed in the outer stator, wherein a radial sealing element, e.g., a “vane,” connected to the inner rotor extends into each chamber, wherein each work chamber is divided into two essentially pressure-tight pressure spaces.
  • pressurized medium lines open into the pressure spaces, so that through targeted pressurization of the pressure spaces, the vanes can be pivoted within the work chambers, with the result that a rotation of the camshaft and consequently a change in the relative rotational position between the camshaft and crankshaft is caused by the inner rotor locked in rotation with the camshaft.
  • a certain rotational position can be maintained by a correspondingly equal pressurization of the pressure spaces.
  • the camshaft adjuster is controlled by a control unit that controls the supply and discharge of pressurized medium to and from the individual pressure spaces on the basis of detected characteristic data of the internal combustion engine, for example, rotational speed and load.
  • the flows of pressurized medium are regulated, for example, by a control valve.
  • the locking device conventionally comprises a locking pin that is held in the inner rotor and is forced by a spring in the axial direction out from the inner rotor and engages in the locking position in a locking receptacle that is formed in the outer stator, in particular, in a side wall.
  • a positive fit mechanical connection is created between the inner rotor and outer stator in a desired rotational position commonly called “base position.”
  • the base position commonly involves different end rotational positions that are also designated as the “advanced position” and “retarded position” of the inner rotor.
  • the retarded position corresponds to an end rotational position of the inner rotor in a rotational direction that is directed opposite to its rotational direction specified by the crankshaft drive.
  • the advanced position corresponds to an end rotational position of the inner rotor in a rotational direction that is directed equal to its rotational direction specified by the crankshaft drive.
  • pressurized medium lines that are formed, for example, in a side surface of the inner rotor as pressurized medium grooves and connect at least one of the pressure chambers to the locking receptacle allocated to the locking pin in a fluid-conducting way.
  • the maximum possible rotational angle area for a rotational adjustment of the inner and outer rotors is specified by the advanced stop corresponding to the advanced position or by the retarded stop corresponding to the retarded position in the vanes within the work chambers.
  • the setting of the maximum possible rotational angle area through the use of a separate rotational angle limiting device is also known, as is predominantly the case for camshaft adjusters produced from sheet-metal parts.
  • Such a rotational angle limiting device comprises, for example, a rotational angle limiting bolt that is held in the inner rotor and projects out of the inner rotor and engages in a rotational angle limiting connecting link that is allocated to the rotational angle limiting bolt and is formed in the outer stator, for example, in a side wall.
  • a rotational angle limiting bolt that is held in the inner rotor and projects out of the inner rotor and engages in a rotational angle limiting connecting link that is allocated to the rotational angle limiting bolt and is formed in the outer stator, for example, in a side wall.
  • one of the rotational angle limiting stops of the rotational angle limiting connecting link is arranged so that if the rotational angle limiting bolt contacts this rotational angle limiting stop, the locking pin can engage in the associated locking receptacle.
  • a camshaft adjuster with a locking and rotational angle limiting arrangement for the rotationally fixed locking of the inner and outer rotors and also with a rotational angle limiting device for limiting the relative rotation of the inner rotor and outer stator is described, for example, in the German Laid-open Patent Publication DE 198 60418 A1.
  • DE 10 2007 011 282 A1 discloses a device for the camshaft adjustment of an internal combustion engine, wherein not only one locking pin, but two locking pins are stopped in receptacles, in order to realize the stated locking device.
  • camshaft adjustment devices are used in control drives of internal combustion engines, in particular, camshaft adjusters for chain and belt drives. They are used both in gasoline engines and also in diesel engines.
  • camshaft adjusters with several locking units, wherein the durability of the contact-rich locking pins in a locking connecting link is not given, present problems.
  • the objective of the present invention is to prevent the disadvantages named above and to nevertheless present a locking device that can be realized in an especially economical way and with low installation/production costs.
  • the insert part is arranged so that it can be brought into blocking contact with two blocking elements, such as pins or pegs, that can move in the axial direction.
  • Such a center locking unit in the form of an insert part between the two locking pins with integrated oil control channel allows a reduction of the locking play. Furthermore, a realization of the oil supply of the locking device through the insert part, a realization of the locking and unlocking function of the locking device over the entire adjustment area, and a variant-rich connection to the counter contours according to the available technology can then be effectively achieved.
  • the insert part is harder than the drive part and/or the driven part is constructed, advantageously hardened or formed from high-strength material.
  • the durability is therefore increased. Because only the insert part must be made from high-strength or hardened material, the production costs can be reduced.
  • the drive part and/or a chain wheel present on the drive part or a locking cover can be made from soft material, while the insert part can be made as a stamped part, sintered part, or metal injection molding part.
  • a rotor can also be provided with an axial or radial oil supply for the locking units.
  • One advantageous embodiment is also characterized in that the insert part locks the driven part in the middle between the first angular position and the second angular position, coming into contact at two points, advantageously at two opposing ends each with a blocking element, due to a positive-fit connection.
  • the insert part then realizes a double-sided locking contact to each pin and is used for camshaft adjusters with a base position between the two vane stops, so-called locking device adjusters, and therefore several locking units. It is then not a disadvantage if the locking connecting link is made from soft material and remains non-hardened.
  • a positive fit, non-positive fit, and/or material fit connection can be used for fixing the insert part on the drive part or on the driven part.
  • a rigid connection can be eliminated and a solution with play can be used.
  • the positive fit connection could be the presence of radial and/or axial grooves with corresponding counter contours.
  • Non-positive fit connections can be screw connections, pin connections, or pressed connections. Weld connections, solder connections, or sintered connections or sintered shapes allow a material fit connection.
  • the insert part is located in a center position of the driven part relative to the drive part between two blocking elements. Then smaller numbers of individual parts can be used, because each element can take on several tasks. The tolerance chain therefore can be reduced.
  • the insert part has, on its opposite ends, concave recesses that are adapted to the outer contours of the blocking elements. An adapted locking of the blocking elements in the insert part is then the result, which contributes to noise minimization.
  • the insert part is in connection with the oil control channels.
  • the functionality is therefore improved considerably, because by an oil guidance notch or oil guidance groove that is advantageously formed opposite a positive fit groove of the insert part, hydraulic fluid, such as oil from the oil control channels, can reach through the oil guidance notch or oil guidance groove over the surface of the insert part up to the top side of the blocking elements and then force this back against the spring force again.
  • the oil lines in the area of the insert part are supported by an oil guide groove extending in the longitudinal direction of the insert part on the surface of the insert part and/or the driven part.
  • the oil guide groove can be bent and extend over approximately 180°.
  • the locking device can be switched hydraulically, and it has at least two locking pins.
  • the insert part can be located within both end stops of the adjustment angle.
  • a supply of control oil over the entire adjustment area through one or more grooves in the connecting link base is also advantageous.
  • the invention also relates to a control drive with a camshaft adjustment device explained above.
  • the invention also relates to an internal combustion engine with such a control drive.
  • FIG. 1 is a perspective diagram of an insert part as inserted in a camshaft adjustment device according to the invention
  • FIG. 2 is a view of a first embodiment of a camshaft adjustment device according to the invention in a longitudinal section
  • FIG. 3 is a cross-sectional diagram through the camshaft adjustment device from FIG. 2 along the line III,
  • FIG. 4 is an enlarged diagram of an embodiment of a camshaft adjustment device with an insert part inserted with a positive-fit connection
  • FIG. 5 is a cross-sectional diagram according to the embodiment from FIG. 4 .
  • FIG. 6 is a view of an alternative in which the insert part is connected to the camshaft adjustment device with a non-positive fit connection
  • FIG. 7 is a cross section along the line VII from FIG. 6 .
  • FIG. 8 is a cutout view of another embodiment according to the invention in which the insert part is connected to the camshaft adjustment device with a material fit connection, and
  • FIG. 9 is a cross-sectional diagram along the line IX from FIG. 8 .
  • insert part 2 shown in FIG. 1 is used.
  • Such insert parts 2 can also be called insert elements.
  • the camshaft adjustment device 1 As shown in FIG. 2 , the camshaft adjustment device 1 according to the invention has a drive part 3 and a driven part 4 .
  • the insert part 2 is here inserted into the driven part 4 within a connecting link 5 as can be easily seen in FIG. 3 .
  • the driven part 4 is constructed as an inner rotor and is connected to a component of a not-shown camshaft.
  • the connecting link 5 is also called a rotational angle limiting connecting link and fixes the maximum rotation of the driven part 4 relative to the drive part 3 between a first angular position, that is, a first maximum value, and a second angular position, that is, a second maximum value.
  • two ends 6 of the insert part 2 are in positive-fit and adjacent contact with the convex outer contours of a respective blocking element 8 .
  • the blocking element 8 is constructed as a pin or peg on both sides of the insert part 2 .
  • a pitch circle 11 extends between centers of each of the blocking elements 8 .
  • the concave outer contours 7 of the ends 6 of the insert part 2 are each intersected by the pitch circle 11 .
  • FIGS. 4 and 5 While a positive-fit connection type of the insert part 2 to the driven part 4 is shown in FIGS. 4 and 5 , a combination of a screw connection, pin connection, and press connection for fixing the insert part 2 on the driven part 4 is used in FIGS. 6 and 7 .
  • a screw 10 surrounded by two pins 9 is used in this respect.
  • FIGS. 4 and 5 While a positive-fit connection for fixing the insert part 2 is used in FIGS. 4 and 5 and a non-positive fit connection for fixing is used in FIGS. 6 and 7 , the realization of a material fit connection is shown in FIGS. 8 and 9 , namely by welding, soldering, or sintering.
  • insert part 2 is processed, e.g., hardened, before it is attached to the drive part 3 or the driven part 4 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
US13/773,934 2012-02-29 2013-02-22 Insert part for camshaft adjuster with center locking Expired - Fee Related US8881700B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102012203114.6A DE102012203114B4 (de) 2012-02-29 2012-02-29 Einlegeteil für Nockenwellenversteller mit Mittenverriegelung, sowie Steuertrieb und Verbrennungskraftmaschine damit
DE102012203114 2012-02-29
DE102012203114.6 2012-02-29

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Publication Number Publication Date
US20130220252A1 US20130220252A1 (en) 2013-08-29
US8881700B2 true US8881700B2 (en) 2014-11-11

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US13/773,934 Expired - Fee Related US8881700B2 (en) 2012-02-29 2013-02-22 Insert part for camshaft adjuster with center locking

Country Status (4)

Country Link
US (1) US8881700B2 (de)
KR (1) KR20130099885A (de)
CN (1) CN103291398B (de)
DE (1) DE102012203114B4 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10247057B2 (en) 2014-05-08 2019-04-02 Schaeffler Technologies AG & Co. KG Camshaft adjuster having a variable-length insert part

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014009091A1 (de) * 2014-06-19 2015-12-24 Hilite Germany Gmbh Schwenkmotorversteller für eine Nockenwelle
DE102014213118A1 (de) * 2014-07-07 2015-08-06 Schaeffler Technologies AG & Co. KG Nockenwellenversteller
CN109281724B (zh) * 2017-07-21 2022-07-26 舍弗勒技术股份两合公司 凸轮轴调节器和内燃机
SG11202103257QA (en) * 2018-10-09 2021-04-29 Promote Corp Excrement disposal method and apparatus for the same

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19860418A1 (de) 1998-12-28 2000-06-29 Schaeffler Waelzlager Ohg Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine, insbesondere Nockenwellen-Verstelleinrichtung mit Flügelrad
DE10064222A1 (de) 1999-12-24 2001-08-16 Aisin Seiki Verstellbares Ventilsteuersystem
US20010022164A1 (en) * 2000-01-31 2001-09-20 Kazumi Ogawa Valve timing regulation device for internal combustion engines
DE102007011282A1 (de) 2007-03-08 2008-09-11 Schaeffler Kg Vorrichtung zur Nockenwellenverstellung einer Brennkraftmaschine
DE102007019920A1 (de) 2007-04-27 2008-11-06 Schaeffler Kg Verrieglungs- und Drehwinkelbegrenzungsanordnung eines Nockenwellenverstellers
US20090114502A1 (en) 2006-05-03 2009-05-07 Schaeffler Kg Locking element for camshaft adjustors
DE102010009393A1 (de) 2010-02-26 2011-09-01 Schaeffler Technologies Gmbh & Co. Kg Vorrichtung zur variablen Einstellung der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19860418A1 (de) 1998-12-28 2000-06-29 Schaeffler Waelzlager Ohg Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine, insbesondere Nockenwellen-Verstelleinrichtung mit Flügelrad
DE10064222A1 (de) 1999-12-24 2001-08-16 Aisin Seiki Verstellbares Ventilsteuersystem
US20010022164A1 (en) * 2000-01-31 2001-09-20 Kazumi Ogawa Valve timing regulation device for internal combustion engines
US20090114502A1 (en) 2006-05-03 2009-05-07 Schaeffler Kg Locking element for camshaft adjustors
DE102007011282A1 (de) 2007-03-08 2008-09-11 Schaeffler Kg Vorrichtung zur Nockenwellenverstellung einer Brennkraftmaschine
DE102007019920A1 (de) 2007-04-27 2008-11-06 Schaeffler Kg Verrieglungs- und Drehwinkelbegrenzungsanordnung eines Nockenwellenverstellers
DE102010009393A1 (de) 2010-02-26 2011-09-01 Schaeffler Technologies Gmbh & Co. Kg Vorrichtung zur variablen Einstellung der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10247057B2 (en) 2014-05-08 2019-04-02 Schaeffler Technologies AG & Co. KG Camshaft adjuster having a variable-length insert part

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Publication number Publication date
DE102012203114B4 (de) 2020-06-18
US20130220252A1 (en) 2013-08-29
KR20130099885A (ko) 2013-09-06
CN103291398A (zh) 2013-09-11
CN103291398B (zh) 2018-01-19
DE102012203114A1 (de) 2013-08-29

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